CVE-2019-8952 in DIVAR IP 2000
Summary
by MITRE
A Path Traversal vulnerability located in the webserver affects several Bosch hardware and software products. The vulnerability potentially allows a remote authorized user to access arbitrary files on the system via the network interface. Affected hardware products: Bosch DIVAR IP 2000 (vulnerable versions: 3.10; 3.20; 3.21; 3.50; 3.51; 3.55; 3.60; 3.61; 3.62; fixed versions: 3.62.0019 and newer), Bosch DIVAR IP 5000 (vulnerable versions: 3.10; 3.20; 3.21; 3.50; 3.51; 3.55; 3.60; 3.61; 3.62; fixed versions: 3.80.0033 and newer). Affected software products: Video Recording Manager (VRM) (vulnerable versions: 3.10; 3.20; 3.21; 3.50; 3.51; 3.55; 3.60; 3.61; 3.62; 3.70; 3.71 before 3.71.0032 ; fixed versions: 3.71.0032; 3.81.0032 and newer), Bosch Video Management System (BVMS) (vulnerable versions: 3.50.00XX; 3.55.00XX; 3.60.00XX; 3.70.0056; fixed versions: 7.5; 3.71.0032).
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Analysis
by VulDB Data Team • 06/09/2020
The vulnerability described in CVE-2019-8952 represents a critical path traversal flaw within Bosch's web server implementations that affects multiple security-critical hardware and software products. This weakness resides in the web server component of Bosch DIVAR IP series cameras and their associated Video Recording Manager and Bosch Video Management System software platforms. The vulnerability operates at the application layer and specifically targets how the web server processes file access requests, creating an opportunity for unauthorized file system access through network interfaces. According to the Common Weakness Enumeration framework, this vulnerability maps directly to CWE-22 Path Traversal, which is classified as a serious weakness that enables attackers to access files outside the intended directory structure. The flaw allows a remote authorized user to manipulate file path parameters in web requests, potentially enabling access to sensitive system files, configuration data, and other unauthorized resources.
The technical exploitation of this vulnerability occurs when the web server fails to properly validate or sanitize file path inputs received through network requests. Attackers can craft malicious requests that include directory traversal sequences such as ../ or ..\ to navigate beyond the intended file system boundaries. This allows them to access files that should normally be restricted, including system configuration files, log files, and potentially sensitive data stored on the device. The affected Bosch DIVAR IP 2000 and 5000 series cameras, along with the Video Recording Manager and Bosch Video Management System software, all share this common vulnerability in their web server implementations. The exploitation requires network access and the ability to send crafted HTTP requests to the affected systems, making it particularly concerning for network-connected security infrastructure where unauthorized access could lead to complete system compromise.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it can potentially enable attackers to escalate privileges and gain deeper system access. The affected products are primarily used in security monitoring and video surveillance environments where they store sensitive video feeds, system configurations, and access logs. A successful exploitation could allow an attacker to retrieve system credentials, modify configuration files, or even access video recordings that contain sensitive information. The vulnerability affects multiple versions of Bosch products, indicating a widespread issue within the product line that required coordinated patching efforts. Organizations using these systems face potential exposure to data breaches, system compromise, and disruption of critical security monitoring functions. The impact is particularly severe in industrial and enterprise environments where these devices form part of critical infrastructure security systems.
Mitigation strategies for CVE-2019-8952 involve immediate implementation of software updates provided by Bosch to address the path traversal vulnerability. Organizations should prioritize patching all affected hardware and software versions, particularly those running vulnerable firmware versions such as 3.10, 3.20, 3.21, 3.50, 3.51, 3.55, 3.60, 3.61, 3.62, and the specific vulnerable versions of VRM and BVMS software. Network segmentation and access control measures should be implemented to limit unauthorized network access to these devices, including firewall rules that restrict direct access to the web interfaces of affected systems. Additionally, organizations should conduct comprehensive vulnerability assessments to identify all instances of affected products within their network infrastructure. The mitigation approach aligns with the MITRE ATT&CK framework's defensive strategies for command and control, specifically targeting the use of network-based attacks and credential access techniques that could leverage this vulnerability. Regular monitoring of system logs for suspicious file access patterns and implementing proper input validation controls can help detect potential exploitation attempts. Organizations should also consider implementing network intrusion detection systems to monitor for known attack patterns associated with path traversal vulnerabilities.